Adjusting device for the lower-knife-supporting jaw-beams of leather-splitting machines.



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UNITED STA-TE o ollwliomlitmy c'ocem;,.

Be it known that we, .IosrzPH y Zitti-inl). Qtricl.n'x'citize1 1s oftheUnited States, residing atNewark, in the countypov Essex and State ofNew Jersey, have invented a 'ce1-tain new and userul Improvement inAdji'isting Devices for the Lower- Knife Supporting Jaw-l3eams ofLeather- Spltting Machines, of which the following I is a'specification. j Y

he invention relates to hide splitting machines, and has for its objectthe adjustment of the lower knife supportingv jaw beam to compensate.for the sagging of the middle portion of said beam due to its ownweight, or pressure of the hide above, or both. This'enables theknife'throughout vits whole length to be supported in a .true horizontalplane, and prevents untrue splitting of the hide.

In the accompanying drawings-Figure 1 is a rear 4View of the' transversebeam which forms the lower knife-supporting jaw, showing ourz1dji1sti1ig'-device attached thereto. I|`ig. 2 a section on the line 2.2. of Fig. 1,; showinv also' the knife, gage roll, spring roll yandelastic roll in section. 4 Fig. 3 is a section on the' line 3. 3. ofFig. 1, the upper jaw being removed.

Similar letters oi' reference indicate like .n.rts. p A is the lowerknife-supporting jaw'beam of a leather splitting machine ,secured atlits ends to the sideframes B -by bolts and nuts Ll., in the usual way.

D the upper jaw disposed on the lower jaw and provided with Vthe usualadjusting screws; E is the knife, F the gage roll, G the springroll andH the elastic or rubber roll which supports-the spring roll. The hide Iafter passing between ,the4 ga and spring roll meets thee knife edge andis split.

All of the' aforesaid parts are old and well know n.

In using leather s litting machines embmying the above escribedconstruction, we have found that while the bolts and nuts C secure thejaw beam A at its ends to the frames B, with sufficient rigidity, theydo not hold it from becomingdepressed by the pressure of the hide aboveespecially when-- thick parts of the hide are passing. through themachine, or from saglging due to its own weight. The result is t at asthis part of H. GAY

` bolts ian-.roms nis-firmen eroiwmimwnnsimmnesroiif'nanaamasrnrrfrmenaemnns the knife above it is lio longer supported andalso drops, so that instead .of standing truly horizontal."everywhereit= is downwardly curved. Thisjis'. fatal to accurate splitting, to theproduction of a true surface on the split 4 and also reduces thepossible.number .f splitsl obtainable from the hide. zOur device lobviatesmhisdifficulty l and enables us to produce splits ofunusu'a thi'n ness withtrue surfaces.` ,On the .lower side:

of the Iaw beam A is secured at its ends'by u'girder having an' upperflange L and web At the middle of the flange L are placed twoadjustingscrews O, P, which bear against `the bottom member Q, of the jaw beam A,

or may be threaded to enter threaded apertures therein.' Said screws aredisposed one behind the other, so that one screw O acts on the frontpart of the member Q, and the other P, on the rear part. Between thescrews O and P is--a third screw R, which passes downwardly through thebottom .member Q', and enters flange L.

The girder web M is 'to be constructed of such dimension as to rendersaid girder stiffer' than the jaw beam A. Hence when the adjustinglscrews O, P, R, are suitably Aturned the middle portion of the beam Amay be raised back to proper level, 'and by adjusting the screw O or thescrew P, said beam may also be slightly tilted in one direction or theother to correct any skewing or like deviation from true horizontality.

We claim: 1. In combination with the lower knife jaw beam of a leathersplitting machine, and

'with means for supporting and fastening said beamat its ends, means foradjusting the intermediate portion of said beam to compensate. -for thedownward sagging thereof.

2. In combination with the lower knife jaw beam of a leather splittingmachine, and with means for su porting and fastening said beam at its ens,'means for tilting the intermediate rtion of said beam.

3. In combination with the lower knife jaw beam of a leather splittingmachine, and with means for supporting and fastening said beam at its ens, means for adjusting the intermediate portion of said beam tollieatib'nmaniiierrir, 11907. semi iro. 496,053.

which flange is about equal in width to the bottom of the jaw beam.

compensate for the sagging thereof and means for tilting said portion;Y.

4. In combination with thelower knife jaw beam of a leather splittingmachine, and

vwith means for sup orting and lfastening said beam atv its en s, agirder havin a flan e secured at its ends tothe lower. ace of t e lowermember of said beam,4 and adjusting. screws in said flan e disposedbetween said beam supports an acting on said' lower face,

5. In combination with the lower knifel jaw beam of a leather splittingmachine, and with lmeans for sup orting and fastening said beam at itsends, a girder havin a flan e secured at its ends to the lower ce of t elower member ofsaid beam, and an adjusting screw disposed between saidbeam supports and in thelower member of said beam and acting on the saidgirder flange.

scanso 6. Inqcombinntion with the lower knife jaw beam of a leathersplittingmachine, and with means for sup orting 'and fastening said beamat its ends, a girder havin -`a flan e secured -at its ends to thelower' ce of t e lower member yof said beam, ad'usting screws 'in saidflange and dispos 'be .tweenl said beam supports and acting on saidlower-face,l and an ad'ustin screw in said lower. member and disposefirst named screws and avon said girder `flange v In .testimony whereofwe h ve atlixed our signatures in plesencezof two witnesses. JOSEPH H.'GA-Y.

WILLIAM D. QUIGLEY'.

Witnesses:

GERTRUDE T. PORTER, PARK BENJAMIN, Jr.

between said*

